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Commit 9e8c4273 authored by vignesh babu's avatar vignesh babu Committed by Linus Torvalds
Browse files

is_power_of_2: ufs/super.c 



Replace (n & (n-1)) with is_power_of_2

Signed-off-by: default avatarvignesh babu <vignesh.babu@wipro.com>
Acked-by: default avatarEvgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e7c310c3

fs/ufs/super.c

+3 −2
Original line number Original line Diff line number Diff line
@@ -87,6 +87,7 @@ 
#include <linux/smp_lock.h>

#include <linux/smp_lock.h>

#include <linux/buffer_head.h>

#include <linux/buffer_head.h>

#include <linux/vfs.h>

#include <linux/vfs.h>

#include <linux/log2.h>





#include "swab.h"

#include "swab.h"

#include "util.h"

#include "util.h"
@@ -854,7 +855,7 @@ magic_found: 
	uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);

	uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);

	uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);

	uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);





	if (uspi->s_fsize & (uspi->s_fsize - 1)) {

	if (!is_power_of_2(uspi->s_fsize)) {

		printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n",

		printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n",

			uspi->s_fsize);

			uspi->s_fsize);

			goto failed;

			goto failed;
@@ -869,7 +870,7 @@ magic_found: 
			uspi->s_fsize);

			uspi->s_fsize);

		goto failed;

		goto failed;

	}

	}

	if (uspi->s_bsize & (uspi->s_bsize - 1)) {

	if (!is_power_of_2(uspi->s_bsize)) {

		printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n",

		printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n",

			uspi->s_bsize);

			uspi->s_bsize);

		goto failed;

		goto failed;